Note:
Major airports comprise
the 35 Operational Evolution Partnership (OEP) airports. Segment defined as
non-stop service from specified major airport to any other airport, including
non-major airports, e.g. EWR to LAX is defined as a segment from EWR and LAX
to EWR is defined as a segment from LAX.

Nationwide there were 18218 scheduled flights, 1175
weather-related cancellations, and 173 other cancellations. Other
cancellations reported in the categories of: carrier, national air system (NAS), or security.